Rotatable electrical connector



July 1, 1947. M. R. wElssMAN ROTATABLE ELECTRICAL CONNECTOR Filed Marh 20, 194e INVENTOR MoRTo/R. WEISSMAN Patented July 1, 1947 UNITED STATES PATENT OFFICE 2,423,276 ROTATABLE ELECTRICAL CONNECTOR Morton R. Weissman, West New York, N. J.

Application March 20, 1946, Serial No. 655,714

2 Claims. 1 This invention relates generally to electrical connectors and more particularly to connectors of the type used in microphones, amplifiers,r

sound equipment and the like.

Heretofore in connectors of this character contact has been made between the cable and the coupling by means of an eyelet through which the cable is pushed and then soldered, the solder joint being the only contact existing. Due to the soft material of the solder, continuous pressur caused by tightening the coupling nut will loosen and flatten the joint thus resulting in noise. Also the flux used in soldering the cable to the eyelet causes considerable electrical leakage across the insulator.

It is a primary object of the present invention to overcome the foregoing defects.

Another object is to eliminate leakage, noise and rattling,

A further object is to provide a connector of this character that is simple in construction, easily assembled and disassembled and economical to manufacture.

Still another object is to provide a solid contact member with means for readily connecting it to a conductor.

Yet another object is to facilitate the soldering of the conductor to the contact member of the connector when the conductor is in the connector assembly.

A still further object is to provide a connector of this character with an electrical swivel joint.

Yet another object is to provide a connector of this character that is shock-proof and vibration-proof.

The above and other objects and advantages of the invention will be apparent from the description of the invention to follow taken in connection with the accompanying drawing, in Which- Fig. 1 is a side elevational view of an electrical connector embodying the present improvements.

Fig. 2 is a longitudinal sectional view thereof.

Fig. 3 is a cross-sectional View taken on the plane of the line 3-3 of Fig. 1.

Fig. 4 is a cross-sectional view taken on the plane of the line 4-4 of Fig. l.

Fig. 5 is a cross-sectional View taken on the plane of the line 5 5 of Fig. 2.

Fig. 6 is a cross-sectional view taken on the plane of the line 6--6 of Fig. 2.

Referring to Fig. 1, the improved connector comprises a body having an elongated metal tubular portion 5 integrally joined to a tubular body portion 6 shorter in length but slightly greater in outside diameter. An insulating disc l closes the outer end of tubular portion 6 and is secured in position by peening over the outer edge of said portion as indicated at 8. Supported by this disc and disposed axially of the body portion 6 is a contact member 9. This contact member comprises a solid elongated pin preferably silver-plated permanently set into the disc and extending inwardly into the tubular portion 6. The inner end of the pin terminates in a semitubular lug I0, which is exposed through a cutout portion ll provided in the wall of tubular portion 6, A coil spring I2 is threaded into the tubular portion 5 for protecting the conductor or cable and is detachably held therein by a set screw I3. The tubular portion 5 may be provided with a knurled outer section I4 for convenience in manipulating.

A coupling nut l5 is slidably and rotatably mounted on the tubular body 5 and is provided with an inwardly extending flange I6 at one end adapted to engage a shoulder l1 formed on the tubular portion 6. The nut is long enough to extend beyond the insulating disc 1 when it is moved to its furthermost point on the tubular portion 5 and this extended portion is formed With internal screw threads l'l for receiving a knurl or panel mounting connector I8 such as disclosed in my copending application Serial Number 655,715, filed March 20, 1946, and having an axially disposed contact member adapted to frictionally engage contact 9. A screw I9 passing through the flanged end of the coupling nut and extending into a circumferential groove 20 formed on the outer surface of tubular portion 5, adjacent the shoulder I1, permits swiveling of the connector but prevents longitudinal movement thereof.

In use, a cable or conductor (not shown) is threaded through the coil spring l2 with its bare portion positioned or seated in the semi-tubular lug I0, the coupling nut l5 having been moved to expose the cut-out portion Il. The inner end of the conductor and the lug can then be securely connected together by soldering. The coupling nut is then returned to its extended position as seen in Fig. 2 and is held there by screw I9 ready to receive a male connector member such as the panel mounting connector lll.

The coupling nut may also be provided with a knurled section 2| for convenience in manipulating.

Changes in details might be resorted to Without departing from the principle of the invention and I desire to be limited only by the state of the prior art and the appended claims.

I claim:

1. An electrical connector of the character described comprising a body having a tubular portion for receiving a conductor, another tubular portion forming an integral extension of said first-named tubular portion, said second-named tubular portion having a portion of its Wall cut away, an insulating disc seated in one end of the tubular extension, said end of the tubular extension being peened over to secure said disc in position, a contact pin supported by said disc and extending inwardly and axially of the tubular extension, said pin having an enlarged end exteriorly of the disc, an integral semi-tubular lug formed on the inner end of said contact pin and having an open portion of its wall opening toward said cut-away portion to facilitate connection to the inner end of a conductor extending through said first-named tubular portion and an' elongated tubular coupling nut rotatably and removably supported on the first-named tubular portion and forming an extension of said body, said nut when in normal operative condition enclosing said tubular extension and cut-out portion in opposed relation, said nut having an interiorly screw-threaded portion at one end for removably receiving a connector device in operative relation to the enlarged end of said contact pin.

2. An electrical connector of the character described comprising a body having a tubular portion for receiving a conductor, said tubular portion having an exterior circumferential groove, another tubular portion forming an integral extension of said rst-nanied tubular section, a shoulder formed on said latter tubular portion, said second-named tubular portion having a portion of its wall cut away, an insulating disc seated in one end of the tubular extension, a Contact pin supported by said disc and extending inwardly and axially of the tubular extension, an integral semi-tubular lug formed on the inner end of said contact pin, said lug having the open portion of its wall opening facing toward said cut-away portion for connection to the inner end of a conductor extending through said iirstnamed tubular portion, an elongated tubular coupling nut rotatably and removably supported on the first-named tubular portion and forming an extension of said body, said nut when 1n normal operative condition enclosing said tubular extension and cut-away portion in opposed relation, said nut having an interiorly screw-threaded portion at one end for removably receiving a connector device in operative relation to said contact pin and having an inwardly extending ilange at its other end and coacting with said shoulder to prevent sliding movement in one direction, and a screw carried by said nut adapted to extend through said flange into said circumferential groove for removably holding the nut and body in operative relation, said lug being exposed and accessible through said cut-away portion upon removal of said nut.

MORTON R. WEISSMAN.

REFERENCES CITED The following references are of record in the 

